Open cell polypropylene foam and process for making same

Details Open cell polypropylene foam and process for making same Open cell polypropylene foam and process for making same

B - Operations, Transporting

29

C

B29C 44/20 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2150018

Disclosed is a process for making a low density, dimensionally-stable, open- cell, extruded propylene polymer foam comprising primarily an expanded propylene polymer material wherein the foam has a blowing agent comprising greater than 85 percent by weight of one or more organic blowing agents based upon the total weight of the blowing agent. The propylene polymer material comprises more than 50 weight percent or more of propylene monomeric units based upon the total weight of the propylene polymer material. The foam has a density 96 kilograms or less per cubic meter. The foam is greater than 20 percent open cell.

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